TrojanDownloader:Win32/GuloaderCrypt.MK!MTB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is TrojanDownloader:Win32/GuloaderCrypt.MK!MTB infection?

In this short article you will locate concerning the interpretation of TrojanDownloader:Win32/GuloaderCrypt.MK!MTB and also its negative influence on your computer system. Such ransomware are a form of malware that is specified by online frauds to require paying the ransom by a victim.

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In the majority of the situations, TrojanDownloader:Win32/GuloaderCrypt.MK!MTB ransomware will certainly instruct its targets to start funds transfer for the objective of counteracting the modifications that the Trojan infection has actually presented to the victim’s gadget.

TrojanDownloader:Win32/GuloaderCrypt.MK!MTB Summary

These alterations can be as adheres to:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the target’s hard drive — so the target can no longer utilize the information;
  • Preventing regular access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
z.whorecord.xyzRansom.Wannacry
a.tomx.xyzRansom.Wannacry

TrojanDownloader:Win32/GuloaderCrypt.MK!MTB

One of the most normal channels where TrojanDownloader:Win32/GuloaderCrypt.MK!MTB Ransomware are injected are:

  • By methods of phishing emails;
  • As an effect of customer winding up on a resource that holds a malicious software;

As soon as the Trojan is effectively infused, it will certainly either cipher the information on the sufferer’s computer or prevent the tool from working in an appropriate way – while also placing a ransom money note that discusses the need for the sufferers to effect the repayment for the function of decrypting the documents or restoring the documents system back to the first condition. In a lot of instances, the ransom money note will certainly turn up when the customer restarts the COMPUTER after the system has actually already been damaged.

TrojanDownloader:Win32/GuloaderCrypt.MK!MTB circulation networks.

In various corners of the world, TrojanDownloader:Win32/GuloaderCrypt.MK!MTB grows by leaps and also bounds. Nevertheless, the ransom notes and techniques of obtaining the ransom quantity may differ depending on certain neighborhood (regional) setups. The ransom notes and also methods of extorting the ransom money quantity may vary depending on specific neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software program.

    In certain areas, the Trojans often wrongfully report having discovered some unlicensed applications enabled on the sufferer’s tool. The alert after that requires the user to pay the ransom money.

    Faulty declarations concerning unlawful content.

    In countries where software program piracy is much less popular, this method is not as effective for the cyber scams. Conversely, the TrojanDownloader:Win32/GuloaderCrypt.MK!MTB popup alert may incorrectly claim to be deriving from a police establishment and will report having located kid porn or various other unlawful information on the gadget.

    TrojanDownloader:Win32/GuloaderCrypt.MK!MTB popup alert may wrongly declare to be acquiring from a law enforcement institution and will report having situated child pornography or various other unlawful information on the tool. The alert will likewise have a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 67C76142
md5: 264052f0b3506bcc522bb7d3e1221617
name: 264052F0B3506BCC522BB7D3E1221617.mlw
sha1: 32b39e165fe9e7c1a2d008fffbee1c22156d8292
sha256: d257354ce73f4e36a91196e7bd60dc27e9307027dd44886b1114632ae51a4a0b
sha512: 982c6d3db5881d3661c41dfdb2a0a223ad27c4b87a2fe5517d1f7fd8ac4dae00a7957f446bae9f5c558590b763eaeb1cd7918eeb239c1225c9f49c9df3714a0b
ssdeep: 768:4lXW4AL9iJqKsDjPaFCPccp/mZDtht9MCbwgnLkyfeGMD:8m1+qjPaFCkcp/IDtVLbnIyPMD
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0409 0x04b0
InternalName: FORMKAGERS
FileVersion: 2.04
CompanyName: AXE Pro 2018
Comments: AXE Pro 2018
ProductName: AXE Pro
ProductVersion: 2.04
FileDescription: AXE Pro
OriginalFilename: FORMKAGERS.exe

TrojanDownloader:Win32/GuloaderCrypt.MK!MTB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetectVM.malware1
Elasticmalicious (high confidence)
DrWebTrojan.PackedENT.197
MicroWorld-eScanTrojan.GenericKD.35727712
FireEyeTrojan.GenericKD.35727712
CAT-QuickHealTrojan.IGENERIC
McAfeePWS-FCUB!264052F0B350
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.Vebzenpak.4!c
SangforMalware
K7AntiVirusTrojan ( 00574b4f1 )
BitDefenderTrojan.GenericKD.35727712
K7GWTrojan ( 00574b4f1 )
BitDefenderThetaGen:NN.ZevbaCO.34700.em0@aeCZCsni
CyrenW32/Kryptik.CSH.gen!Eldorado
SymantecRansom.Wannacry
TrendMicro-HouseCallTrojanSpy.Win32.CRYPTINJECT.USMANLF20
AvastWin32:Trojan-gen
ClamAVWin.Trojan.VBGeneric-9810654-0
KasperskyTrojan.Win32.Vebzenpak.acsd
AlibabaTrojanDownloader:Win32/Vebzenpak.f12722c4
ViRobotTrojan.Win32.Z.Agent.69632.FWC
RisingTrojan.Injector!8.C4 (TFE:5:SxAW5gTyrtL)
Ad-AwareTrojan.GenericKD.35727712
SophosMal/Generic-S
ComodoMalware@#1tm3b5ugp6zkj
F-SecureTrojan.TR/AD.VBCryptor.knzhp
TrendMicroTrojanSpy.Win32.CRYPTINJECT.USMANLF20
McAfee-GW-EditionPWS-FCUB!264052F0B350
EmsisoftTrojan.GenericKD.35727712 (B)
AviraTR/AD.VBCryptor.knzhp
KingsoftWin32.Troj.Vebzenpak.ac.(kcloud)
MicrosoftTrojanDownloader:Win32/GuloaderCrypt.MK!MTB
GridinsoftTrojan.Win32.Downloader.oa
ArcabitTrojan.Generic.D2212960
ZoneAlarmTrojan.Win32.Vebzenpak.acsd
GDataTrojan.GenericKD.35727712
CynetMalicious (score: 100)
AhnLab-V3Malware/Win32.RL_Generic.R358521
ALYacTrojan.Agent.GuLoader
MAXmalware (ai score=80)
MalwarebytesTrojan.GuLoader
PandaTrj/GdSda.A
APEXMalicious
ESET-NOD32a variant of Win32/Injector.EODG
YandexTrojan.Injector!EXcjaMImJuQ
IkarusTrojan.VB.Crypt
FortinetW32/EOCU!tr
AVGWin32:Trojan-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (W)
Qihoo-360Win32/Trojan.d38

How to remove TrojanDownloader:Win32/GuloaderCrypt.MK!MTB ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for TrojanDownloader:Win32/GuloaderCrypt.MK!MTB files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove TrojanDownloader:Win32/GuloaderCrypt.MK!MTB you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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